WESTLAKE CORP (WLK) — Institutional Holders, Q2 2026

362 institutional investment managers reported a WLK position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $2.9B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← WLK stock profile

WLK in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

Added to

106

Trimmed

120

Sold out

Biggest buyers

AQR CAPITAL MANAGEMENTAdded · +1,310,383 sh+$95.7M
DIMENSIONAL FUND ADVISORSAdded · +585,534 sh+$42.7M
JACOBS LEVY EQUITY MANAGEMENTAdded · +360,320 sh+$26.3M
CITADEL ADVISORSAdded · +339,282 sh+$24.8M
ExodusPoint Capital ManagementNew · +327,195 sh+$23.9M

Biggest sellers

Orbis Allan Gray LtdTrimmed · -3,209,155 sh-$234.3M
WELLINGTON MANAGEMENT GROUP LLPTrimmed · -1,651,701 sh-$120.6M
Capital World InvestorsTrimmed · -1,368,658 sh-$99.9M
FMRTrimmed · -951,230 sh-$69.4M
Holocene AdvisorsSold out · -730,035 sh-$53.3M

WLK 13F holders ranked 1–100 of 362

Institutional investors reporting a position in WESTLAKE CORP on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	BlackRock#1 · 3,294,162 sh	3,294,162	$240.5M	<0.01%	+7.0%
2	Capital World Investors#2 · 2,842,348 sh	2,842,348	$207.5M	0.02%	-32.5%
3	PRICE T ROWE ASSOCIATES#3 · 2,206,676 sh	2,206,676	$161.1M	0.02%	-8.3%
4	Orbis Allan Gray Ltd#4 · 2,084,364 sh	2,084,364	$152.2M	0.52%	-60.6%
5	DIMENSIONAL FUND ADVISORS#5 · 2,051,554 sh	2,051,554	$149.8M	0.03%	+39.9%
6	VANGUARD PORTFOLIO MANAGEMENT#6 · 1,752,627 sh	1,752,627	$127.9M	<0.01%	-1.0%
7	BRANDES INVESTMENT PARTNERS#7 · 1,572,939 sh	1,572,939	$114.8M	0.81%	-14.6%
8	AQR CAPITAL MANAGEMENT#8 · 1,570,453 sh	1,570,453	$114.6M	0.04%	+503.9%
9	VANGUARD CAPITAL MANAGEMENT#9 · 1,464,223 sh	1,464,223	$106.9M	<0.01%	+0.6%
10	STATE STREET#10 · 1,453,407 sh	1,453,407	$106.1M	<0.01%	+5.3%
11	GOLDMAN SACHS GROUP#11 · 1,280,873 sh	1,280,873	$93.5M	<0.01%	-8.1%
12	CITADEL ADVISORS#12 · 1,054,868 sh	1,054,868	$77.0M	<0.01%	+47.4%
13	MIRAE ASSET GLOBAL ETFS Ltd.#13 · 1,023,403 sh	1,023,403	$74.7M	0.09%	+8.4%
14	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#14 · 817,207 sh	817,207	$59.7M	0.01%	-16.7%
15	GEODE CAPITAL MANAGEMENT#15 · 718,597 sh	718,597	$52.5M	<0.01%	+17.0%
16	JACOBS LEVY EQUITY MANAGEMENT#16 · 709,355 sh	709,355	$51.8M	0.19%	+103.2%
17	BALYASNY ASSET MANAGEMENT L.P.#17 · 625,859 sh	625,859	$45.7M	0.06%	+69.3%
18	Woodline Partners#18 · 451,986 sh	451,986	$33.0M	0.10%	+34.1%
19	Nuveen#19 · 446,479 sh	446,479	$32.6M	<0.01%	-20.9%
20	MORGAN STANLEY#20 · 437,571 sh	437,571	$31.9M	<0.01%	-10.1%
21	UBS Group AG#21 · 431,633 sh	431,633	$31.5M	<0.01%	-46.8%
22	SCHRODER INVESTMENT MANAGEMENT GROUP#22 · 375,889 sh	375,889	$28.1M	0.02%	+0.4%
23	MILLENNIUM MANAGEMENT#23 · 366,074 sh	366,074	$26.7M	<0.01%	+330.7%
24	FMR#24 · 361,243 sh	361,243	$26.4M	<0.01%	-72.5%
25	ExodusPoint Capital Management#25 · 327,195 sh	327,195	$23.9M	0.15%	New
26	Qube Research & Technologies Ltd#26 · 321,718 sh	321,718	$23.5M	0.02%	New
27	CHARLES SCHWAB INVESTMENT MANAGEMENT#27 · 318,823 sh	318,823	$23.3M	<0.01%	+2.3%
28	Erste Asset Management GmbH#28 · 305,000 sh	305,000	$22.8M	0.18%	-22.8%
29	VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V.#29 · 268,434 sh	268,434	$19.6M	0.15%	+9.9%
30	Jupiter Topco#30 · 267,748 sh	267,748	$19.5M	<0.01%	—
31	NORTHERN#31 · 262,926 sh	262,926	$19.2M	<0.01%	-2.3%
32	ROBOTTI ROBERT#32 · 235,379 sh	235,379	$17.2M	2.77%	+62.3%
33	BANK OF AMERICA#33 · 232,213 sh	232,213	$17.0M	<0.01%	-2.0%
34	Susquehanna Portfolio Strategies#34 · 230,396 sh	230,396	$16.8M	0.27%	+1154.1%
35	ProShare Advisors#35 · 228,319 sh	228,319	$16.7M	0.02%	-22.8%
36	NORGES BANK#36 · 214,101 sh	214,101	$15.6M	<0.01%	—
37	Jump Financial#37 · 209,861 sh	209,861	$15.3M	0.12%	New
38	VANGUARD FIDUCIARY#38 · 209,650 sh	209,650	$15.3M	<0.01%	+1.9%
39	D. E. Shaw#39 · 200,534 sh	200,534	$14.6M	<0.01%	-14.0%
40	Russell Investments Group, Ltd.#40 · 194,362 sh	194,362	$14.2M	0.01%	+117.5%
41	Invesco Ltd.#41 · 190,951 sh	190,951	$13.9M	<0.01%	+6.4%
42	JPMORGAN CHASE#42 · 163,287 sh	163,287	$12.3M	<0.01%	+67.1%
43	Cerity Partners#43 · 166,436 sh	166,436	$12.1M	0.01%	+129.0%
44	Bank of New York Mellon#44 · 163,455 sh	163,455	$11.9M	<0.01%	-9.7%
45	Allspring Global Investments#45 · 163,075 sh	163,075	$11.9M	0.02%	-42.9%
46	SPROTT#46 · 160,110 sh	160,110	$11.7M	0.37%	+20.7%
47	TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY#47 · 156,757 sh	156,757	$11.4M	0.08%	-12.0%
48	Campbell & Investment Adviser#48 · 148,180 sh	148,180	$10.8M	0.57%	New
49	WELLINGTON MANAGEMENT GROUP LLP#49 · 141,816 sh	141,816	$10.4M	<0.01%	-92.1%
50	Lighthouse Investment Partners#50 · 135,361 sh	135,361	$9.9M	0.27%	New
51	Recurrent Investment Advisors#51 · 128,771 sh	128,771	$9.4M	0.58%	+14.2%
52	Quantinno Capital Management#52 · 123,228 sh	123,228	$9.0M	0.01%	+1.5%
53	HRT FINANCIAL#53 · 116,395 sh	116,395	$8.5M	0.02%	New
54	MARSHALL WACE, LLP#54 · 111,574 sh	111,574	$8.1M	<0.01%	New
55	TUDOR INVESTMENT ET AL#55 · 110,710 sh	110,710	$8.1M	0.01%	New
56	WELLS FARGO & COMPANY#56 · 105,936 sh	105,936	$7.7M	<0.01%	-0.7%
57	ALLIANCEBERNSTEIN L.P.#57 · 65,993 sh	65,993	$7.7M	<0.01%	-2.0%
58	MACKENZIE FINANCIAL#58 · 104,903 sh	104,903	$7.7M	<0.01%	+45.8%
59	ROYAL BANK OF CANADA#59 · 96,772 sh	96,772	$7.1M	<0.01%	-6.9%
60	THOMIST CAPITAL MANAGEMENT#60 · 96,200 sh	96,200	$7.0M	2.23%	+31.8%
61	BNP PARIBAS FINANCIAL MARKETS#61 · 94,400 sh	94,400	$6.9M	<0.01%	+1311.1%
62	Point72 Asset Management, L.P.#62 · 89,731 sh	89,731	$6.6M	<0.01%	New
63	Alberta Investment Management#63 · 89,200 sh	89,200	$6.5M	0.04%	New
64	RHUMBLINE ADVISERS#64 · 86,305 sh	86,305	$6.3M	<0.01%	-1.1%
65	Walleye Capital#65 · 82,847 sh	82,847	$6.0M	0.02%	+38.5%
66	Meiji Yasuda Asset Management Ltd.#66 · 82,778 sh	82,778	$6.0M	0.27%	+4.2%
67	Squarepoint Ops#67 · 79,967 sh	79,967	$5.8M	<0.01%	+107.5%
68	NATIXIS#68 · 77,117 sh	77,117	$5.6M	0.02%	New
69	Toroso Investments#69 · 76,055 sh	76,055	$5.6M	<0.01%	+59.0%
70	PDT Partners#70 · 75,777 sh	75,777	$5.5M	0.29%	0.0%
71	PRINCIPAL FINANCIAL GROUP#71 · 75,653 sh	75,653	$5.5M	<0.01%	+1.6%
72	AGMAN CAPITAL#72 · 71,465 sh	71,465	$5.2M	3.29%	-1.1%
73	Engineers Gate Manager#73 · 71,301 sh	71,301	$5.2M	0.07%	+67.8%
74	Swiss National Bank#74 · 64,200 sh	64,200	$4.7M	<0.01%	-15.4%
75	SG Americas Securities#75 · 59,116 sh	59,116	$4.3M	<0.01%	+140.5%
76	Turas Capital Management#76 · 58,800 sh	58,800	$4.3M	1.97%	New
77	Assenagon Asset Management S.A.#77 · 55,289 sh	55,289	$4.0M	—	New
78	Merewether Investment Management#78 · 53,439 sh	53,439	$3.9M	0.07%	-75.7%
79	AXQ CAPITAL#79 · 51,437 sh	51,437	$3.8M	0.41%	New
80	Legal & General Group Plc#80 · 50,025 sh	50,025	$3.7M	<0.01%	-1.4%
81	Mariner#81 · 47,319 sh	47,319	$3.5M	<0.01%	New
82	TWO SIGMA INVESTMENTS#82 · 45,357 sh	45,357	$3.3M	<0.01%	New
83	BI Asset Management Fondsmaeglerselskab A/S#83 · 41,791 sh	41,791	$3.1M	—	-0.6%
84	NEW YORK STATE COMMON RETIREMENT FUND#84 · 40,926 sh	40,926	$3.0M	<0.01%	-86.8%
85	MANUFACTURERS LIFE INSURANCE COMPANY, THE#85 · 37,155 sh	37,155	$2.7M	<0.01%	+11.6%
86	CITIGROUP#86 · 36,569 sh	36,569	$2.7M	<0.01%	-33.0%
87	STATE OF WISCONSIN INVESTMENT BOARD#87 · 35,823 sh	35,823	$2.6M	<0.01%	+41.9%
88	OCCUDO QUANTITATIVE STRATEGIES#88 · 35,695 sh	35,695	$2.6M	0.14%	-19.7%
89	BANK OF MONTREAL#89 · 35,590 sh	35,590	$2.6M	<0.01%	-8.8%
90	HITE Hedge Asset Management#90 · 34,589 sh	34,589	$2.5M	0.14%	New
91	Retirement Systems of Alabama#91 · 34,454 sh	34,454	$2.5M	<0.01%	-15.7%
92	ACADIAN ASSET MANAGEMENT#92 · 34,498 sh	34,498	$2.5M	<0.01%	New
93	LOS ANGELES CAPITAL MANAGEMENT#93 · 32,600 sh	32,600	$2.4M	<0.01%	New
94	ABN AMRO INVESTMENT SOLUTIONS#94 · 31,597 sh	31,597	$2.3M	—	New
95	AMERIPRISE FINANCIAL#95 · 31,288 sh	31,288	$2.3M	<0.01%	+9.8%
96	WORLDQUANT MILLENNIUM ADVISORS#96 · 31,204 sh	31,204	$2.3M	<0.01%	+69.8%
97	VANGUARD ASSET MANAGEMENT, Ltd#97 · 30,040 sh	30,040	$2.2M	<0.01%	-9.9%
98	ENVESTNET ASSET MANAGEMENT#98 · 29,586 sh	29,586	$2.2M	<0.01%	+5.5%
99	FIRST ADVISORS#99 · 27,496 sh	27,496	$2.0M	<0.01%	-73.1%
100	Freestone Grove Partners#100 · 27,248 sh	27,248	$2.0M	0.01%	New

Funds that sold out of WLK in Q2 2026 (62)

Held WLK at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held WLK in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
Holocene Advisors730,035 sh	730,035	$85.3M
DEPRINCE RACE & ZOLLO203,366 sh	203,366	$23.8M
Ceredex Value Advisors177,900 sh	177,900	$20.8M
Yaupon Capital Management107,044 sh	107,044	$12.5M
Lloyd Harbor Capital Management62,000 sh	62,000	$7.2M
Rokos Capital Management LLP60,800 sh	60,800	$7.1M
Albar Capital Partners LLP48,814 sh	48,814	$5.7M
Trek Financial45,296 sh	45,296	$5.3M
Twin Tree Management35,977 sh	35,977	$4.2M
Boston Partners31,696 sh	31,696	$3.7M
Occam Crest Management29,256 sh	29,256	$3.4M
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM25,000 sh	25,000	$2.9M
AMG National Bank23,041 sh	23,041	$2.7M
Duquesne Family Office21,194 sh	21,194	$2.5M
Edgestream Partners, L.P.17,681 sh	17,681	$2.1M
NOMURA ASSET MANAGEMENT INTERNATIONAL13,868 sh	13,868	$1.6M
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS8,356 sh	8,356	$976.1K
WINTON GROUP Ltd8,229 sh	8,229	$961.3K
Aster Capital Management (DIFC) Ltd9,428 sh	9,428	$943.1K
Capital Group Investment Management Pte. Ltd.7,693 sh	7,693	$898.7K
GATEWAY INVESTMENT ADVISERS7,147 sh	7,147	$834.9K
Concentric Capital Strategies6,517 sh	6,517	$761.3K
Caprock Group5,171 sh	5,171	$604.1K
THOMPSON SIEGEL & WALMSLEY2,976 sh	2,976	$348.0K
TWINBEECH CAPITAL2,950 sh	2,950	$344.6K
RAYMOND JAMES FINANCIAL2,931 sh	2,931	$342.4K
iSAM Funds (UK) Ltd2,835 sh	2,835	$331.2K
Archer Investment2,493 sh	2,493	$291.2K
VOYA INVESTMENT MANAGEMENT2,436 sh	2,436	$284.6K
MFA WEALTH ADVISORS2,382 sh	2,382	$278.3K
HighTower Advisors2,305 sh	2,305	$269.3K
Swiss Life Asset Management Ltd2,253 sh	2,253	$263.2K
PRUDENTIAL FINANCIAL2,228 sh	2,228	$260.3K
Empowered Funds2,162 sh	2,162	$252.6K
Sivia Capital Partners2,099 sh	2,099	$245.2K
EAGLE GLOBAL ADVISORS2,066 sh	2,066	$241.3K
Callan Family Office2,017 sh	2,017	$235.6K
Amundi1,997 sh	1,997	$233.3K
Maryland State Retirement & Pension System1,915 sh	1,915	$223.7K
Greenland Capital Management1,812 sh	1,812	$211.7K
Utah Retirement Systems1,800 sh	1,800	$210.3K
Laird Norton Wetherby Company1,752 sh	1,752	$204.7K
OPPENHEIMER1,735 sh	1,735	$202.7K
PICKERING ENERGY PARTNERS1,000 sh	1,000	$116.8K
QUADRANT CAPITAL GROUP764 sh	764	$93.6K
Walleye Trading514 sh	514	$60.0K
Destiny Wealth Partners510 sh	510	$59.6K
Advisory Services Network187 sh	187	$21.8K
Root Financial Partners172 sh	172	$20.1K
Ancora Advisors97 sh	97	$11.3K
Golden State Equity Partners66 sh	66	$7.7K
ATLAS CAPITAL ADVISORS14 sh	14	$1.6K
Steward Partners Investment Advisory10 sh	10	$1.2K
PICTON MAHONEY ASSET MANAGEMENT8 sh	8	$935.00
ZRC WEALTH MANAGEMENT7 sh	7	$818.00
Vermillion Wealth Management6 sh	6	$701.00
TWIN PEAKS WEALTH ADVISORS4 sh	4	$467.00
Investors Portfolio Services4 sh	4	$376.00
TopTier Wealth Management3 sh	3	$350.00
NORTHWESTERN MUTUAL WEALTH MANAGEMENT2 sh	2	$234.00
CURIO WEALTH2 sh	2	$234.00
BARTLETT & WEALTH MANAGEMENT1 sh	1	$115.00

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.